When you interact with the Matrix, you can do it in one
of three modes. In augmented reality, or AR mode, you
deal with reality directly, and you use your meat body
to interact with the Matrix through AR overlays. In virtual
reality, or VR mode, your body goes limp and your
only sensory input comes from the Matrix.
But AR and VR don't do anything without a Matrix connection... by their nature they are ways of interacting with the Matrix.
The Matrix can't propagate wirelessly to inside a Faraday Cage.. that's the point of a Faraday Cage.
How do I phrase this... That passage is written without considering the seriously edge-case situation we're discussing. AR and VR are ways to interact with devices and hosts, AKA, "the matrix". More than nine times out of ten, there's no reason you'd try to use AR or VR without being wireless. But consider this...
You know how you can hack a hardwired system, where everything is a throwback device wired to eachother? You still use AR or VR to do it even though it's cut off from the matrix, because that's how computers work in Shadowrun. AR and VR are ways to interface with the matrix and devices.
I think I understand firebug's argument in saying you don't need to be "on the matrix" to directly jump in to a vehicle. If I do understand her correctly, I don't agree. Sr5 pg 241 lists Jump Into Rigged Vehicle as a Matrix action. No Matrix = No Matrix Actions, logically. You, your RCC, and/or your Vehicle you're directly jacked in to need to have contact with the Matrix to do a Matrix action, neh?
No, you don't. Editing a file is a matrix action. Are you going to argue that you can't write on your commlink when it's not connected to the matrix? What's needed is a device capable of performing the action, and a connection to a valid target. Normally this is done wirelessly via the matrix, but you
can just plug into the device you are targeting. The reason a direct connection removes any Noise is because you can interface with the device
without the matrix. Really, am I being that crazy by suggesting that turning off your wireless doesn't stop you from
using wires to connect to things?